By the time host Rebel Wilson is done with everybody Mark Wahlberg expects to laugh, be surprised – and maybe be a little hurt – at this weekend's MTV Movie Awards.

"I think she may insult some people, but she is very, very funny," Wahlberg, 41, tells PEOPLE at Thursday night's Miami premiere of his movie Pain & Gain, presented by Grey Goose.

The actor certainly seems poised for a Wilson barb. He's nominated for best duo for being paired with a computer-animated bear voiced (profanely) by Seth MacFarlane in Ted. Wahlberg's up against a pal, Will Ferrell, nominated with Zach Galifianakis for The Campaign.

Rebel Wilson has a not-so-rebellious secret. Back when she was starting out as a comedian in Australia, "I went to law school at the same time," says the actress, 27.

"I didn't have an opportunity to practice, but you never know," she says with a laugh. "One day, if things don't work out, I might be a barrister!" So far, the courtrooms are safe. Since making a splash as Kristen Wiig's ditzy roommate in Bridesmaids in 2011, Wilson has been in high demand for off-kilter roles.

Next up she'll host the MTV Movie Awards on April 14 and star with Mark Wahlberg in Pain & Gain, out April 26.

This year's MTV Movie Award nominations were hot on Jennifer Lawrence, but colder on The Twilight Saga: Breaking Dawn – Part 2.

Lawrence, 22, fresh off her Best Actress Oscar win, earned five nominations, including three with her Silver Linings Playbook costar Bradley Cooper for best musical moment, best kiss and best on-screen duo.

Django Unchained and Ted led the pack with seven nominations each.

But it was thumbs down for vampires Bella, Edward and Breaking Dawn, which received just one nomination – for Taylor Lautner, who received a nod for best shirtless performance.

The Pitch Perfect star dined with a male companion Tuesday night at Basix Cafe in West Hollywood. The Aussie actress, clad in a leather jacket and with her hair in a ponytail, savored fries and a soda while inside the dimly lit eatery.

"She seemed totally laid-back and comfortable with her dinner guest," an onlooker, who describes the meal as "peaceful," tells PEOPLE. "They were involved in a long conversation and seemed close." – Dahvi Shira